<template>
	<view v-if="goods_info.goods_name" class="goods-detail-container">
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
			<swiper-item v-for="(item,index) in goods_info.pics" :key="index">
				<image :src="item.pics_big" @click="preview(index)"></image>
			</swiper-item>

		</swiper>
		<!-- 商品信息区域 -->
		<view class="goods-info-box">
			<!-- 商品价格 -->
			<view class="price">￥{{goods_info.goods_price}}</view>
			<!-- 商品信息主体区域 -->
			<view class="goods-info-body">
				<!-- 商品的名字 -->
				<view class="goods-name">{{goods_info.goods_name}}</view>
				<!-- 收藏 -->
				<view class="favi">
					<uni-icons type="star" size="18" color="gray"></uni-icons>
					<text>收藏</text>
				</view>
			</view>
			<!-- 运费 -->
			<view class="yf">快递：免运费</view>
		</view>
		 <rich-text :nodes="goods_info.goods_introduce"></rich-text>
		 <!-- 商品导航组件区域 -->
		 <view class="goods_nav">
		   <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
		 </view>
	</view>
</template>

<script>
	import { mapState,mapMutations,mapGetters } from 'vuex'
	export default {
		computed: {
			...mapState('m_cart',[]),
			...mapGetters('m_cart',['total'])
		},
		watch: {
			// total(newValue) {
			// 	const findResult = this.options.find(x => x.text === '购物车')
			// 	if(findResult) {
			// 		findResult.info = newValue
			// 	}
			// }
			total: {
				handler(newValue) {
					// 找到options中text等于购物车的那项 ，使用findResult接收当前项
					const findResult = this.options.find(x => x.text === '购物车')
						// 存在则当前项中的info改为新的值
						if(findResult) {
							findResult.info = newValue
						}
				},
				//一进入就监听
				immediate: true
			}
		},
		data() {
			return {
				goods_info: {},
				options: [
					{
						icon: 'shop',
						text: '店铺',
						infoBackgroundColor: '#007aff',
						infoColor: "red"
					},
					{
						icon: 'cart',
						text: '购物车',
						info: 0
					},
				],
				buttonGroup: [{
				    text: '加入购物车',
				    backgroundColor: '#ff0000',
				    color: '#fff'
				  },
				  {
				    text: '立即购买',
				    backgroundColor: '#ffa200',
				    color: '#fff'
				  }
				]
			};
		},
		onLoad(options) {
			const goods_id = options.goods_id
			this.getGoodsDetail(goods_id)
		},
		methods: {
			...mapMutations('m_cart',['addToCart']),
			async getGoodsDetail(goods_id) {
				const {data: res} = await uni.$http.get('/api/public/v1/goods/detail', {goods_id: goods_id}) //可简写{ goods_id }
				if (res.meta.status !== 200) return uni.$showMsg()
				res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ').replace(/webp/g, 'jpg')
				this.goods_info = res.message
				console.log(res);
			},
			preview(index) {
				uni.previewImage({
					current: index,
					urls: this.goods_info.pics.map(item => item.pics_big)
				})
			},
			onClick(e) {
				console.log(e);
				if(e.content.text === '购物车') {
					uni.switchTab({
						url: '/pages/cart/cart'
					})
				}
			},
			buttonClick(e) {
				console.log(e);
				if(e.content.text === '加入购物车') {
					// 组织商品的信息对象
					// { goods_id, goods_name, goods_price, goods_count, goods_small_logo, goods_state }
					const goods = {
					  goods_id: this.goods_info.goods_id,
					  goods_name: this.goods_info.goods_name,
					  goods_price: this.goods_info.goods_price,
					  goods_count: 1,
					  goods_small_logo: this.goods_info.goods_small_logo,
					  goods_state: true
					}
					// 调用 addToCart 方法
					this.addToCart(goods)
					
				}
			}
			
		}
	}
</script>

<style lang="scss">
	swiper {
		height: 750rpx;

		swiper-item {
			image {
				width: 100%;
				height: 100%;
			}
		}
	}

	.goods-info-box {
		padding: 10px;
		padding-right: 0;
		.price {
			color: #C00000;
			font-size: 18px;
			margin: 10px 0;
		}

		.goods-info-body {
			display: flex;
			justify-content: space-between;

			.goods-name {
				font-size: 13px;
				margin-right: 10px;
			}

			.favi {
				width: 120px;
				font-size: 12px;
				display: flex;
				flex-direction: column;
				align-items: center;
				justify-content: center;
				border-left: 1px solid #efefef;
				color: gray;
			}
		}
	}

	.yf {
		font-size: 12px;
		color: gray;
		margin: 10px 0;
	}
	.goods_nav {
		position: fixed;
		bottom: 0;
		left: 0;
		width: 100%;
	}
	// 底部导航栏高度是50px，所以给一个50px的安全区域
	.goods-detail-container {
	  padding-bottom: 50px;
	}
</style>